alum shale

alum shale

[′al·əm ‚shāl]
(petrology)
A shale containing pyrite that is decomposed by weathering to form sulfuric acid, which acts on potash and alumina constituents to form alum. Also known as alum schist; alum slate.
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References in periodicals archive ?
Uranium enrichment shorewards in black shales: a case study from the Scandinavian Alum Shale.
Part I covers the era of unprecedented growth, between 1600 and the Glorious Revolution in 1689, when the port of Whitby expanded from a primary focus on the trade in alum shale necessary for woollen production to ship-building and the northeastern coal trade.
Figure 15: Shale Gas Market, Western Europe, Scandinavian Alum Shale 43
As part of the talk we were told of a Loftus man, Louis Hunton, son of a quarry manager, who discovered the significance of layers or zones of ammonite fossils, dug out with tons of alum shale, and presented a paper to The Royal Society.
The licences are underlain by the thinly overburden covered Alum Shale Formation, which has a maximum thickness of 180 metres in this area, and extends for 10s of kilometres in all directions.
Alum shale and graptolite argillite form patches over extensive areas in the outskirts of the Baltica palaeocontinent [1].
900 mA, remove alum shale and lay new foundations, excavate and cast under the existing foundation walls.
Figure 21: Shale Gas Market, Western Europe, Scandinavian Alum Shale 37
The following data, from the Lebork S-1 well is only from the sidewalls taken in the lower portion of the Ordovician and the Alum shale, as the whole core analysis from above these intervals is not yet completed.
Large-scale utilization of the Dictyonema shale as well as of the Alum Shale of Sweden has so many negative sides listed among the above potential environmental restrictions and concerns that the inclusion of such resources in world OS potential is completely misleading.
The SGU drilled 28 vertical diamond drill holes in an area of approximately 250 square kilometres and analysed the alum shale cores for molybdenum, vanadium, uranium and organic carbon ("Corg").
There are numerous studies conducted on various metalliferous black shale/oil shale deposits worldwide--black shale deposits in North America [7-12], China [13, 14], central Europe [15], and alum shale in Scandinavia [3, 16-20]--focusing on the general characteristics and different aspects of metallogenesis in those assemblages.